TST/CLN: remove try block from tests/test_strings.py::TestStringMethods::test_slice (#27277)

Author: simonjayhawkins

pandas/tests/test_strings.py

@@ -2795,23 +2795,20 @@ def test_pipe_failures(self):
 
         tm.assert_series_equal(result, exp)
 
-    def test_slice(self):
+    @pytest.mark.parametrize(
+        "start, stop, step, expected",
+        [
+            (2, 5, None, Series(["foo", "bar", NA, "baz"])),
+            (0, 3, -1, Series(["", "", NA, ""])),
+            (None, None, -1, Series(["owtoofaa", "owtrabaa", NA, "xuqzabaa"])),
+            (3, 10, 2, Series(["oto", "ato", NA, "aqx"])),
+            (3, 0, -1, Series(["ofa", "aba", NA, "aba"])),
+        ],
+    )
+    def test_slice(self, start, stop, step, expected):
         values = Series(["aafootwo", "aabartwo", NA, "aabazqux"])
-
-        result = values.str.slice(2, 5)
-        exp = Series(["foo", "bar", NA, "baz"])
-        tm.assert_series_equal(result, exp)
-
-        for start, stop, step in [(0, 3, -1), (None, None, -1), (3, 10, 2), (3, 0, -1)]:
-            try:
-                result = values.str.slice(start, stop, step)
-                expected = Series(
-                    [s[start:stop:step] if not isna(s) else NA for s in values]
-                )
-                tm.assert_series_equal(result, expected)
-            except IndexError:
-                print("failed on %s:%s:%s" % (start, stop, step))
-                raise
+        result = values.str.slice(start, stop, step)
+        tm.assert_series_equal(result, expected)
 
         # mixed
         mixed = Series(